Instances AWS RDS db.r5b.4xlarge db.r5b.4xlarge
db.r5b.4xlarge is an AWS RDS size with 16 vCPUs, 128 GiB memory (Intel Xeon Platinum 8000 series). In US East (N. Virginia) it costs $2.368 per hour on demand ($1,728.64 per month) for PostgreSQL, Single-AZ; a 1-year reserved instance with no upfront costs $1.372 per hour, 42% less. It is sold in 14 regions; the cheapest is EU (Stockholm) at $2.338 per hour.
USD per hour, PostgreSQL, Single-AZ. Reserved prices are no upfront, standard. Cheapest on-demand first.
Prices by engine and deployment in US East (N. Virginia) Option On-demand /hr 1-yr reserved /hr 3-yr reserved /hr PostgreSQL · Single-AZ $2.368 $1.372 – PostgreSQL · Multi-AZ $4.736 $2.743 – Oracle Enterprise BYOL · Single-AZ $2.205 – – Oracle Enterprise BYOL BYOM · Single-AZ $2.205 $1.389 – Oracle Standard Two BYOL · Single-AZ $2.205 $1.389 – Oracle Enterprise BYOL BYOM Custom · Single-AZ $2.208 – – Oracle Standard Two BYOL BYOM Custom · Single-AZ $2.208 – – MariaDB · Single-AZ $2.368 $1.372 – MySQL · Single-AZ $2.368 $1.372 – SQL Server Developer BYOM Custom · Single-AZ $3.344 – – SQL Server Enterprise BYOM Custom · Single-AZ $3.344 – – SQL Server Standard BYOM Custom · Single-AZ $3.344 – – SQL Server Web · Single-AZ $3.847 $3.231 – SQL Server Web Custom · Single-AZ $3.847 – – Oracle Enterprise BYOL BYOM · Multi-AZ $4.41 $2.779 – Oracle Standard Two BYOL · Multi-AZ $4.41 $2.779 – Oracle Enterprise BYOL BYOM Custom · Multi-AZ $4.416 – – Oracle Standard Two BYOL BYOM Custom · Multi-AZ $4.416 – – MariaDB · Multi-AZ $4.736 $2.743 – MySQL · Multi-AZ $4.736 $2.743 – SQL Server Standard · Single-AZ $6.349 $6.00 – SQL Server Standard Custom · Single-AZ $6.349 – – SQL Server Developer BYOM Custom · Multi-AZ $6.688 – – SQL Server Enterprise BYOM Custom · Multi-AZ $6.688 – – SQL Server Standard BYOM Custom · Multi-AZ $6.688 – – SQL Server Web · Multi-AZ $7.424 – – SQL Server Web Custom · Multi-AZ $7.694 – – SQL Server Enterprise · Single-AZ $10.306 $10.281 – SQL Server Enterprise Custom · Single-AZ $10.306 – – SQL Server Standard · Multi-AZ $12.698 $12.00 – SQL Server Standard Custom · Multi-AZ $12.698 – – SQL Server Enterprise · Multi-AZ $15.253 $15.215 – SQL Server Enterprise Custom · Multi-AZ $15.253 – –
Compute Value vCPUs 16 Physical cores 8 Threads per core 2 Architecture x86_64 Processor Intel Xeon Platinum 8000 series CPU maker Intel Clock speed Up to 3.1 GHz Sustained clock 3.1 GHz Burstable No
Memory Value Memory (GiB) 128
Networking Value Network Up to 10 Gbps Network baseline 5 Gbps Network peak 10 Gbps
Storage Value Storage EBS Only EBS throughput 1250 Mbps EBS baseline bandwidth 10,000 Mbps EBS max bandwidth 10,000 Mbps EBS baseline throughput 1,250 MB/s EBS max throughput 1,250 MB/s EBS baseline IOPS 43,333 EBS max IOPS 43,333
Instance details Value Instance type db.r5b.4xlarge Family r5b Category Memory optimized Current generation Yes Normalization factor 64
Other Value Hardware Basis r5b.4xlarge
With or without local disk and networking
Prices updated 2026-11-12 from AWS public price lists. Compare all AWS RDS sizes .